diff options
Diffstat (limited to 'drivers/mtd/spi-nor/micron-st.c')
| -rw-r--r-- | drivers/mtd/spi-nor/micron-st.c | 671 |
1 files changed, 671 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c new file mode 100644 index 000000000000..88033384a71e --- /dev/null +++ b/drivers/mtd/spi-nor/micron-st.c @@ -0,0 +1,671 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005, Intec Automation Inc. + * Copyright (C) 2014, Freescale Semiconductor, Inc. + */ + +#include <linux/mtd/spi-nor.h> + +#include "core.h" + +/* flash_info mfr_flag. Used to read proprietary FSR register. */ +#define USE_FSR BIT(0) + +#define SPINOR_OP_MT_DIE_ERASE 0xc4 /* Chip (die) erase opcode */ +#define SPINOR_OP_RDFSR 0x70 /* Read flag status register */ +#define SPINOR_OP_CLFSR 0x50 /* Clear flag status register */ +#define SPINOR_OP_MT_DTR_RD 0xfd /* Fast Read opcode in DTR mode */ +#define SPINOR_OP_MT_RD_ANY_REG 0x85 /* Read volatile register */ +#define SPINOR_OP_MT_WR_ANY_REG 0x81 /* Write volatile register */ +#define SPINOR_REG_MT_CFR0V 0x00 /* For setting octal DTR mode */ +#define SPINOR_REG_MT_CFR1V 0x01 /* For setting dummy cycles */ +#define SPINOR_REG_MT_CFR1V_DEF 0x1f /* Default dummy cycles */ +#define SPINOR_MT_OCT_DTR 0xe7 /* Enable Octal DTR. */ +#define SPINOR_MT_EXSPI 0xff /* Enable Extended SPI (default) */ + +/* Flag Status Register bits */ +#define FSR_READY BIT(7) /* Device status, 0 = Busy, 1 = Ready */ +#define FSR_E_ERR BIT(5) /* Erase operation status */ +#define FSR_P_ERR BIT(4) /* Program operation status */ +#define FSR_PT_ERR BIT(1) /* Protection error bit */ + +/* Micron ST SPI NOR flash operations. */ +#define MICRON_ST_NOR_WR_ANY_REG_OP(naddr, addr, ndata, buf) \ + SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_MT_WR_ANY_REG, 0), \ + SPI_MEM_OP_ADDR(naddr, addr, 0), \ + SPI_MEM_OP_NO_DUMMY, \ + SPI_MEM_OP_DATA_OUT(ndata, buf, 0)) + +#define MICRON_ST_RDFSR_OP(buf) \ + SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDFSR, 0), \ + SPI_MEM_OP_NO_ADDR, \ + SPI_MEM_OP_NO_DUMMY, \ + SPI_MEM_OP_DATA_IN(1, buf, 0)) + +#define MICRON_ST_CLFSR_OP \ + SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CLFSR, 0), \ + SPI_MEM_OP_NO_ADDR, \ + SPI_MEM_OP_NO_DUMMY, \ + SPI_MEM_OP_NO_DATA) + +static int micron_st_nor_octal_dtr_en(struct spi_nor *nor) +{ + struct spi_mem_op op; + u8 *buf = nor->bouncebuf; + int ret; + u8 addr_mode_nbytes = nor->params->addr_mode_nbytes; + + /* Use 20 dummy cycles for memory array reads. */ + *buf = 20; + op = (struct spi_mem_op) + MICRON_ST_NOR_WR_ANY_REG_OP(addr_mode_nbytes, + SPINOR_REG_MT_CFR1V, 1, buf); + ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto); + if (ret) + return ret; + + buf[0] = SPINOR_MT_OCT_DTR; + op = (struct spi_mem_op) + MICRON_ST_NOR_WR_ANY_REG_OP(addr_mode_nbytes, + SPINOR_REG_MT_CFR0V, 1, buf); + ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto); + if (ret) + return ret; + + /* Read flash ID to make sure the switch was successful. */ + ret = spi_nor_read_id(nor, 0, 8, buf, SNOR_PROTO_8_8_8_DTR); + if (ret) { + dev_dbg(nor->dev, "error %d reading JEDEC ID after enabling 8D-8D-8D mode\n", ret); + return ret; + } + + if (memcmp(buf, nor->info->id->bytes, nor->info->id->len)) + return -EINVAL; + + return 0; +} + +static int micron_st_nor_octal_dtr_dis(struct spi_nor *nor) +{ + struct spi_mem_op op; + u8 *buf = nor->bouncebuf; + int ret; + + /* + * The register is 1-byte wide, but 1-byte transactions are not allowed + * in 8D-8D-8D mode. The next register is the dummy cycle configuration + * register. Since the transaction needs to be at least 2 bytes wide, + * set the next register to its default value. This also makes sense + * because the value was changed when enabling 8D-8D-8D mode, it should + * be reset when disabling. + */ + buf[0] = SPINOR_MT_EXSPI; + buf[1] = SPINOR_REG_MT_CFR1V_DEF; + op = (struct spi_mem_op) + MICRON_ST_NOR_WR_ANY_REG_OP(nor->addr_nbytes, + SPINOR_REG_MT_CFR0V, 2, buf); + ret = spi_nor_write_any_volatile_reg(nor, &op, SNOR_PROTO_8_8_8_DTR); + if (ret) + return ret; + + /* Read flash ID to make sure the switch was successful. */ + ret = spi_nor_read_id(nor, 0, 0, buf, SNOR_PROTO_1_1_1); + if (ret) { + dev_dbg(nor->dev, "error %d reading JEDEC ID after disabling 8D-8D-8D mode\n", ret); + return ret; + } + + if (memcmp(buf, nor->info->id->bytes, nor->info->id->len)) + return -EINVAL; + + return 0; +} + +static int micron_st_nor_set_octal_dtr(struct spi_nor *nor, bool enable) +{ + return enable ? micron_st_nor_octal_dtr_en(nor) : + micron_st_nor_octal_dtr_dis(nor); +} + +static int micron_st_nor_four_die_late_init(struct spi_nor *nor) +{ + struct spi_nor_flash_parameter *params = nor->params; + + params->die_erase_opcode = SPINOR_OP_MT_DIE_ERASE; + params->n_dice = 4; + + /* + * Unfortunately the die erase opcode does not have a 4-byte opcode + * correspondent for these flashes. The SFDP 4BAIT table fails to + * consider the die erase too. We're forced to enter in the 4 byte + * address mode in order to benefit of the die erase. + */ + return spi_nor_set_4byte_addr_mode(nor, true); +} + +static int micron_st_nor_two_die_late_init(struct spi_nor *nor) +{ + struct spi_nor_flash_parameter *params = nor->params; + + params->die_erase_opcode = SPINOR_OP_MT_DIE_ERASE; + params->n_dice = 2; + + /* + * Unfortunately the die erase opcode does not have a 4-byte opcode + * correspondent for these flashes. The SFDP 4BAIT table fails to + * consider the die erase too. We're forced to enter in the 4 byte + * address mode in order to benefit of the die erase. + */ + return spi_nor_set_4byte_addr_mode(nor, true); +} + +static int mt35xu512aba_post_sfdp_fixup(struct spi_nor *nor) +{ + /* Set the Fast Read settings. */ + nor->params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR; + spi_nor_set_read_settings(&nor->params->reads[SNOR_CMD_READ_8_8_8_DTR], + 0, 20, SPINOR_OP_MT_DTR_RD, + SNOR_PROTO_8_8_8_DTR); + + nor->cmd_ext_type = SPI_NOR_EXT_REPEAT; + nor->params->rdsr_dummy = 8; + nor->params->rdsr_addr_nbytes = 0; + + /* + * The BFPT quad enable field is set to a reserved value so the quad + * enable function is ignored by spi_nor_parse_bfpt(). Make sure we + * disable it. + */ + nor->params->quad_enable = NULL; + + return 0; +} + +static const struct spi_nor_fixups mt35xu512aba_fixups = { + .post_sfdp = mt35xu512aba_post_sfdp_fixup, +}; + +static const struct spi_nor_fixups mt35xu01gbba_fixups = { + .post_sfdp = mt35xu512aba_post_sfdp_fixup, + .late_init = micron_st_nor_two_die_late_init, +}; + +static const struct flash_info micron_nor_parts[] = { + { + /* MT35XU512ABA */ + .id = SNOR_ID(0x2c, 0x5b, 0x1a), + .mfr_flags = USE_FSR, + .fixup_flags = SPI_NOR_IO_MODE_EN_VOLATILE, + .fixups = &mt35xu512aba_fixups, + }, { + /* MT35XU01GBBA */ + .id = SNOR_ID(0x2c, 0x5b, 0x1b), + .mfr_flags = USE_FSR, + .fixup_flags = SPI_NOR_IO_MODE_EN_VOLATILE, + .fixups = &mt35xu01gbba_fixups, + }, { + /* + * The MT35XU02GCBA flash device does not support chip erase, + * according to its datasheet. It supports die erase, which + * means the current driver implementation will likely need to + * be converted to use die erase. Furthermore, similar to the + * MT35XU01GBBA, the SPI_NOR_IO_MODE_EN_VOLATILE flag probably + * needs to be enabled. + * + * TODO: Fix these and test on real hardware. + */ + .id = SNOR_ID(0x2c, 0x5b, 0x1c), + .name = "mt35xu02g", + .sector_size = SZ_128K, + .size = SZ_256M, + .no_sfdp_flags = SECT_4K | SPI_NOR_OCTAL_READ, + .mfr_flags = USE_FSR, + .fixup_flags = SPI_NOR_4B_OPCODES, + }, +}; + +static int mt25qu512a_post_bfpt_fixup(struct spi_nor *nor, + const struct sfdp_parameter_header *bfpt_header, + const struct sfdp_bfpt *bfpt) +{ + nor->flags &= ~SNOR_F_HAS_16BIT_SR; + return 0; +} + +static const struct spi_nor_fixups mt25qu512a_fixups = { + .post_bfpt = mt25qu512a_post_bfpt_fixup, +}; + +static const struct spi_nor_fixups n25q00_fixups = { + .late_init = micron_st_nor_four_die_late_init, +}; + +static const struct spi_nor_fixups mt25q01_fixups = { + .late_init = micron_st_nor_two_die_late_init, +}; + +static const struct spi_nor_fixups mt25q02_fixups = { + .late_init = micron_st_nor_four_die_late_init, +}; + +static const struct flash_info st_nor_parts[] = { + { + .name = "m25p05-nonjedec", + .sector_size = SZ_32K, + .size = SZ_64K, + }, { + .name = "m25p10-nonjedec", + .sector_size = SZ_32K, + .size = SZ_128K, + }, { + .name = "m25p20-nonjedec", + .size = SZ_256K, + }, { + .name = "m25p40-nonjedec", + .size = SZ_512K, + }, { + .name = "m25p80-nonjedec", + .size = SZ_1M, + }, { + .name = "m25p16-nonjedec", + .size = SZ_2M, + }, { + .name = "m25p32-nonjedec", + .size = SZ_4M, + }, { + .name = "m25p64-nonjedec", + .size = SZ_8M, + }, { + .name = "m25p128-nonjedec", + .sector_size = SZ_256K, + .size = SZ_16M, + }, { + .id = SNOR_ID(0x20, 0x20, 0x10), + .name = "m25p05", + .sector_size = SZ_32K, + .size = SZ_64K, + }, { + .id = SNOR_ID(0x20, 0x20, 0x11), + .name = "m25p10", + .sector_size = SZ_32K, + .size = SZ_128K, + }, { + .id = SNOR_ID(0x20, 0x20, 0x12), + .name = "m25p20", + .size = SZ_256K, + }, { + .id = SNOR_ID(0x20, 0x20, 0x13), + .name = "m25p40", + .size = SZ_512K, + }, { + .id = SNOR_ID(0x20, 0x20, 0x14), + .name = "m25p80", + .size = SZ_1M, + }, { + .id = SNOR_ID(0x20, 0x20, 0x15), + .name = "m25p16", + .size = SZ_2M, + }, { + .id = SNOR_ID(0x20, 0x20, 0x16), + .name = "m25p32", + .size = SZ_4M, + }, { + .id = SNOR_ID(0x20, 0x20, 0x17), + .name = "m25p64", + .size = SZ_8M, + }, { + .id = SNOR_ID(0x20, 0x20, 0x18), + .name = "m25p128", + .sector_size = SZ_256K, + .size = SZ_16M, + }, { + .id = SNOR_ID(0x20, 0x40, 0x11), + .name = "m45pe10", + .size = SZ_128K, + }, { + .id = SNOR_ID(0x20, 0x40, 0x14), + .name = "m45pe80", + .size = SZ_1M, + }, { + .id = SNOR_ID(0x20, 0x40, 0x15), + .name = "m45pe16", + .size = SZ_2M, + }, { + .id = SNOR_ID(0x20, 0x63, 0x16), + .name = "m25px32-s1", + .size = SZ_4M, + .no_sfdp_flags = SECT_4K, + }, { + .id = SNOR_ID(0x20, 0x71, 0x14), + .name = "m25px80", + .size = SZ_1M, + }, { + .id = SNOR_ID(0x20, 0x71, 0x15), + .name = "m25px16", + .size = SZ_2M, + .no_sfdp_flags = SECT_4K, + }, { + .id = SNOR_ID(0x20, 0x71, 0x16), + .name = "m25px32", + .size = SZ_4M, + .no_sfdp_flags = SECT_4K, + }, { + .id = SNOR_ID(0x20, 0x71, 0x17), + .name = "m25px64", + .size = SZ_8M, + }, { + .id = SNOR_ID(0x20, 0x73, 0x16), + .name = "m25px32-s0", + .size = SZ_4M, + .no_sfdp_flags = SECT_4K, + }, { + .id = SNOR_ID(0x20, 0x80, 0x12), + .name = "m25pe20", + .size = SZ_256K, + }, { + .id = SNOR_ID(0x20, 0x80, 0x14), + .name = "m25pe80", + .size = SZ_1M, + }, { + .id = SNOR_ID(0x20, 0x80, 0x15), + .name = "m25pe16", + .size = SZ_2M, + .no_sfdp_flags = SECT_4K, + }, { + .id = SNOR_ID(0x20, 0xba, 0x16), + .name = "n25q032", + .size = SZ_4M, + .no_sfdp_flags = SPI_NOR_QUAD_READ, + }, { + .id = SNOR_ID(0x20, 0xba, 0x17), + .name = "n25q064", + .size = SZ_8M, + .no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ, + }, { + .id = SNOR_ID(0x20, 0xba, 0x18), + .name = "n25q128a13", + .size = SZ_16M, + .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | + SPI_NOR_BP3_SR_BIT6, + .no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ, + .mfr_flags = USE_FSR, + }, { + .id = SNOR_ID(0x20, 0xba, 0x19, 0x10, 0x44, 0x00), + .name = "mt25ql256a", + .size = SZ_32M, + .no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ, + .fixup_flags = SPI_NOR_4B_OPCODES, + .mfr_flags = USE_FSR, + }, { + .id = SNOR_ID(0x20, 0xba, 0x19), + .name = "n25q256a", + .size = SZ_32M, + .no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ, + .mfr_flags = USE_FSR, + }, { + .id = SNOR_ID(0x20, 0xba, 0x20, 0x10, 0x44, 0x00), + .name = "mt25ql512a", + .size = SZ_64M, + .no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ, + .fixup_flags = SPI_NOR_4B_OPCODES, + .mfr_flags = USE_FSR, + }, { + .id = SNOR_ID(0x20, 0xba, 0x20), + .name = "n25q512ax3", + .size = SZ_64M, + .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | + SPI_NOR_BP3_SR_BIT6, + .no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ, + .mfr_flags = USE_FSR, + }, { + .id = SNOR_ID(0x20, 0xba, 0x21), + .name = "n25q00", + .size = SZ_128M, + .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | + SPI_NOR_BP3_SR_BIT6, + .no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ, + .mfr_flags = USE_FSR, + .fixups = &n25q00_fixups, + }, { + .id = SNOR_ID(0x20, 0xba, 0x22), + .name = "mt25ql02g", + .size = SZ_256M, + .no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ, + .mfr_flags = USE_FSR, + .fixups = &mt25q02_fixups, + }, { + .id = SNOR_ID(0x20, 0xbb, 0x15), + .name = "n25q016a", + .size = SZ_2M, + .no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ, + }, { + .id = SNOR_ID(0x20, 0xbb, 0x16), + .name = "n25q032a", + .size = SZ_4M, + .no_sfdp_flags = SPI_NOR_QUAD_READ, + }, { + .id = SNOR_ID(0x20, 0xbb, 0x17), + .name = "n25q064a", + .size = SZ_8M, + .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | + SPI_NOR_BP3_SR_BIT6, + .no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ, + }, { + .id = SNOR_ID(0x20, 0xbb, 0x18), + .name = "n25q128a11", + .size = SZ_16M, + .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | + SPI_NOR_BP3_SR_BIT6, + .no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ, + .mfr_flags = USE_FSR, + }, { + .id = SNOR_ID(0x20, 0xbb, 0x19, 0x10, 0x44, 0x00), + .name = "mt25qu256a", + .size = SZ_32M, + .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | + SPI_NOR_BP3_SR_BIT6, + .no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ, + .fixup_flags = SPI_NOR_4B_OPCODES, + .mfr_flags = USE_FSR, + }, { + .id = SNOR_ID(0x20, 0xbb, 0x19), + .name = "n25q256ax1", + .size = SZ_32M, + .no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ, + .mfr_flags = USE_FSR, + }, { + .id = SNOR_ID(0x20, 0xbb, 0x20, 0x10, 0x44, 0x00), + .name = "mt25qu512a", + .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | + SPI_NOR_BP3_SR_BIT6, + .mfr_flags = USE_FSR, + .fixups = &mt25qu512a_fixups, + }, { + .id = SNOR_ID(0x20, 0xbb, 0x20), + .name = "n25q512a", + .size = SZ_64M, + .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | + SPI_NOR_BP3_SR_BIT6, + .no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ, + .mfr_flags = USE_FSR, + }, { + .id = SNOR_ID(0x20, 0xbb, 0x21, 0x10, 0x44, 0x00), + .name = "mt25qu01g", + .mfr_flags = USE_FSR, + .fixups = &mt25q01_fixups, + }, { + .id = SNOR_ID(0x20, 0xbb, 0x21), + .name = "n25q00a", + .size = SZ_128M, + .no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ, + .mfr_flags = USE_FSR, + .fixups = &n25q00_fixups, + }, { + .id = SNOR_ID(0x20, 0xbb, 0x22), + .name = "mt25qu02g", + .size = SZ_256M, + .no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ, + .mfr_flags = USE_FSR, + .fixups = &mt25q02_fixups, + } +}; + +/** + * micron_st_nor_read_fsr() - Read the Flag Status Register. + * @nor: pointer to 'struct spi_nor' + * @fsr: pointer to a DMA-able buffer where the value of the + * Flag Status Register will be written. Should be at least 2 + * bytes. + * + * Return: 0 on success, -errno otherwise. + */ +static int micron_st_nor_read_fsr(struct spi_nor *nor, u8 *fsr) +{ + int ret; + + if (nor->spimem) { + struct spi_mem_op op = MICRON_ST_RDFSR_OP(fsr); + + if (nor->reg_proto == SNOR_PROTO_8_8_8_DTR) { + op.addr.nbytes = nor->params->rdsr_addr_nbytes; + op.dummy.nbytes = nor->params->rdsr_dummy; + /* + * We don't want to read only one byte in DTR mode. So, + * read 2 and then discard the second byte. + */ + op.data.nbytes = 2; + } + + spi_nor_spimem_setup_op(nor, &op, nor->reg_proto); + + ret = spi_mem_exec_op(nor->spimem, &op); + } else { + ret = spi_nor_controller_ops_read_reg(nor, SPINOR_OP_RDFSR, fsr, + 1); + } + + if (ret) + dev_dbg(nor->dev, "error %d reading FSR\n", ret); + + return ret; +} + +/** + * micron_st_nor_clear_fsr() - Clear the Flag Status Register. + * @nor: pointer to 'struct spi_nor'. + */ +static void micron_st_nor_clear_fsr(struct spi_nor *nor) +{ + int ret; + + if (nor->spimem) { + struct spi_mem_op op = MICRON_ST_CLFSR_OP; + + spi_nor_spimem_setup_op(nor, &op, nor->reg_proto); + + ret = spi_mem_exec_op(nor->spimem, &op); + } else { + ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLFSR, + NULL, 0); + } + + if (ret) + dev_dbg(nor->dev, "error %d clearing FSR\n", ret); +} + +/** + * micron_st_nor_ready() - Query the Status Register as well as the Flag Status + * Register to see if the flash is ready for new commands. If there are any + * errors in the FSR clear them. + * @nor: pointer to 'struct spi_nor'. + * + * Return: 1 if ready, 0 if not ready, -errno on errors. + */ +static int micron_st_nor_ready(struct spi_nor *nor) +{ + int sr_ready, ret; + + sr_ready = spi_nor_sr_ready(nor); + if (sr_ready < 0) + return sr_ready; + + ret = micron_st_nor_read_fsr(nor, nor->bouncebuf); + if (ret) { + /* + * Some controllers, such as Intel SPI, do not support low + * level operations such as reading the flag status + * register. They only expose small amount of high level + * operations to the software. If this is the case we use + * only the status register value. + */ + return ret == -EOPNOTSUPP ? sr_ready : ret; + } + + if (nor->bouncebuf[0] & (FSR_E_ERR | FSR_P_ERR)) { + if (nor->bouncebuf[0] & FSR_E_ERR) + dev_err(nor->dev, "Erase operation failed.\n"); + else + dev_err(nor->dev, "Program operation failed.\n"); + + if (nor->bouncebuf[0] & FSR_PT_ERR) + dev_err(nor->dev, + "Attempted to modify a protected sector.\n"); + + micron_st_nor_clear_fsr(nor); + + /* + * WEL bit remains set to one when an erase or page program + * error occurs. Issue a Write Disable command to protect + * against inadvertent writes that can possibly corrupt the + * contents of the memory. + */ + ret = spi_nor_write_disable(nor); + if (ret) + return ret; + + return -EIO; + } + + return sr_ready && !!(nor->bouncebuf[0] & FSR_READY); +} + +static void micron_st_nor_default_init(struct spi_nor *nor) +{ + nor->flags |= SNOR_F_HAS_LOCK; + nor->flags &= ~SNOR_F_HAS_16BIT_SR; + nor->params->quad_enable = NULL; +} + +static int micron_st_nor_late_init(struct spi_nor *nor) +{ + struct spi_nor_flash_parameter *params = nor->params; + + if (nor->info->mfr_flags & USE_FSR) + params->ready = micron_st_nor_ready; + + if (!params->set_4byte_addr_mode) + params->set_4byte_addr_mode = spi_nor_set_4byte_addr_mode_wren_en4b_ex4b; + + params->set_octal_dtr = micron_st_nor_set_octal_dtr; + + return 0; +} + +static const struct spi_nor_fixups micron_st_nor_fixups = { + .default_init = micron_st_nor_default_init, + .late_init = micron_st_nor_late_init, +}; + +const struct spi_nor_manufacturer spi_nor_micron = { + .name = "micron", + .parts = micron_nor_parts, + .nparts = ARRAY_SIZE(micron_nor_parts), + .fixups = µn_st_nor_fixups, +}; + +const struct spi_nor_manufacturer spi_nor_st = { + .name = "st", + .parts = st_nor_parts, + .nparts = ARRAY_SIZE(st_nor_parts), + .fixups = µn_st_nor_fixups, +}; |